[astro-ph.SR] The origin of the molecular building blocks of life is a central question in science. A few α-amino acids such as glycine, the simplest proteinogenic amino acid, have been […]
meteorite
![(A) C1 clast containing numerous magnetite (white), pyrrhotite (light gray), and dolomite grains (dark gray). (B) C1 clast with numerous dolomites marked “D,” indicating the dolomite crystal where the FIB was cut (bottom, arrowed, and outlined in yellow). (C) Bright-field TEM image of the FIBed dolomite crystal. Numerous cracks are arrowed. (D) Na x-ray map of the same area as in (C). -- [Science Advances]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/Meteor-over-New-.png?resize=1200%2C715&ssl=1)
Posted inMeteorites & Asteroids
Brines Discovered In A Meteorite From A Primitive CM Asteroid
[Science Advances] The CI (Ivuna-type) carbonaceous material returned from asteroids Ryugu and Bennu contain mobilized sodium from the evaporation or freezing of liquid water into brines, shedding light on the […]
![Vertical component spectrogram of event S1094b, caused by a meteoritic impact (Posiolova et al., 2022). The bottom two panels show P- and S-wave spectra in several 60 second time windows following the direct arrival. The spectral shape stays consistent throughout the inital 150 and 230 seconds after arrival of the phase, indicating an equipartitioning of seismic energy with no significant viscoelastic attenuation. -- [astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/Discrimination-of.png?resize=1200%2C719&ssl=1)
Posted inMars
Discrimination of Tectonic, Swarm And Impact-related Marsquakes Using Spectral Characteristics
[astro-ph.IM] The NASA InSight mission observed over 2000 marsquakes in the course of its three year mission. These quakes varied in magnitude between 1.5 and 4.5, as well as in […]
Posted inImpact events
Researchers Identify Class Of Oddball Meteorite That Killed Earth’s Dinosaurs
[University of British Columbia] A rare CO chondrite meteorite was the probable impactor that struck Earth 66 million years ago, wiping out 75 per cent of Earth’s species, including non-avian […]
Posted inMeteorites & Asteroids
Pristine Meteorite Examination Adds To Our Knowledge Of Ancient Asteroids
[NASA] A meteorite recovered immediately upon its fall to Earth on July 16, 2024, is helping NASA scientists uncover new clues about ancient water, the chemical evolution of primitive asteroids, […]
![Time evolution of the probability distribution of the system for different temperatures as labeled and for fixed parameters: V=106 km3 , L=10 53 erg/s, r=0.01 AU, Grac=26.30 kJ/mol. The vertical axis is enantiomeric excess, and the horizontal axis is time in Myr scale. -- [astro-ph.HE]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/Supernova-Neutrinos.png?resize=1200%2C715&ssl=1)
Posted inAstrochemistry
Supernova Neutrinos And The Origin of Biomolecular Homochirality
[astro-ph.HE] We investigate the role of parity-violating interactions between supernova neutrinos and chiral molecules in nearby interstellar molecular clouds as a potential source of biomolecular homochirality.
![The New jersey meteorite -- [SETI Institute]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/ALien-World.png?resize=1200%2C900&ssl=1)
Posted inAstrochemistry
Alien World Chemistry Found Inside A Meteorite that Struck A New Jersey Home
[SETI Institute] On July 16, 2024 a daytime meteor shook New York City with a sonic boom as it passed just south of the Statue of Liberty. Now, an international […]
Posted inAstrogeology
SwRI Study Found Primordial Mini-moons May Explain Meteorite Composition
[SwRI] A new Southwest Research Institute-led study proposes a solution to a long-standing puzzle in planetary science — what caused the concentration, assembly and preservation of millimeter-sized, spherical mineral grains […]
Posted inMeteorites & Asteroids
20 Years Later: The ALH 84001 Debate in Context with Viking’s Results. Lessons Learned and Portals Opened
[Astrobiology via PubMed] This article is an anecdotal recap of lessons learned from the ALH 84001 debate in light of the historical and recent debate over the Viking results.
Posted inImpact events
Asteroid Assault Made Ancient Earth Too Hot And Chaotic For Continents To Form
[Curtin University] New research led by Curtin University and QUT (Queensland University of Technology) has revealed repeated asteroid impacts may have been the dominant force shaping the early Earth, delivering […]